From: Chris Metcalf <cmetcalf@tilera.com>
Date: Thu, 15 Aug 2013 20:29:02 +0000 (-0400)
Subject: tile: make __write_once a synonym for __read_mostly
X-Git-Tag: v3.12-rc1~120^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce61cdc270a5e0dd18057bbf29bd3471abccbda8;p=pandora-kernel.git

tile: make __write_once a synonym for __read_mostly

This was really only useful for TILE64 when we mapped the
kernel data with small pages. Now we use a huge page and we
really don't want to map different parts of the kernel
data in different ways.

We retain the __write_once name in case we want to bring
it back to life at some point in the future.

Note that this change uncovered a latent bug where the
"smp_topology" variable happened to always be aligned mod 8
so we could store two "int" values at once, but when we
eliminated __write_once it ended up only aligned mod 4.
Fix with an explicit annotation.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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